gadgetbahn 

A transportation concept or implementation that is touted as futuristic or innovative, but in execution turns out to be more expensive and less feasible than traditional means, outweighing their usefulness. Examples include but are not limited to Monorails (most often cited example) Personal Rapid Transit, Maglev, etc, versus traditional means generally referring to rail, subway, and road infrastructure

The term generally carries a negative connotation, in that the solutions may be seen as an expensive 'white elephant' in the truest sense: more difficult and more expensive to maintain and add to without any perceived benefit other than looking cool

References:

Wiktionary, gadgetbahn
Wikipedia, White Elephant disambiguation

Walt Disney World can't afford to expand their monorail, it costs a million dollars a mile for new track, and with the money it would take to expand that gadgetbahn they could buy a whole fleet of buses that fit their existing needs

gadgetbahn by marvin_theparanoidandroid August 25, 2019

gadgetbahn 

Any mode of transport that is "futuristic" or "innovative" in theory, but ends up being either infeasible, impractical, or just a steaming pile of shit in practice.
Gadgetbahn systems are often outperformed by the most basic things, such as buses.

The Simpsons monorail is a classic example of gadgetbahn in television
Elon Musk's "3D roads" have been condemned by many as being an overly expensive gadgetbahn

gadgetbahn by alreadyinusebysomeonelese February 6, 2021

Gadgetbating 

1.The use of technology (such as iPhones, Laptops, etc...) and internet based social media (such as Facebook, Myspace, Twitter, Tumblr, etc...) during a time that makes the use of said technology and applications/social media inappropriate (Such as while at work or attending classes).

2. The act of an individual or group of persons who seem to have an active draw to technology while lacking social structure. (Getting incredibly excited over new technology and ignoring interpersonal relationships)

1. When posting a status on Facebook during class, a fellow student or teacher reserves the right to ask you to stop Gadgetbating.

When using an iPhone whilst at work and not performing your duties you may be fired on grounds of Gadgetbating.

2. When yearning for a new item such as the latest iPhone your friends or partner may ask you to resist drooling on the display model and stop Gadgetbating.

Gadgetbating by Absinthe13 September 21, 2012